<template>
  <section class="loginContainer">
    <div class="loginInner">
      <div class="login_header">
        <h2 class="login_logo">硅谷外卖</h2>
        <div class="login_header_title">
          <a href="javascript:;" :class="{on:loginway}" @click="loginway=true">短信登录</a>
          <a href="javascript:;" :class="{on:!loginway}" @click="loginway=false">密码登录</a>

        </div>
      </div>
      <div class="login_content">
        <form @submit.prevent="login">
          <div :class="{on:loginway}">
            <section class="login_message">
              <input type="tel" maxlength="11" placeholder="手机号" v-model="phone">
              <button :disabled="!rightPhone" class="get_verification"
                      :class="{right_phone:rightPhone}" @click.prevent="getCode">
                {{compuTime>0 ?`已发送(${compuTime}s)` : '获取验证码'}}
              </button>
            </section>
            <section class="login_verification">
              <input type="tel" maxlength="8" placeholder="验证码" v-model="code">
            </section>
            <section class="login_hint">
              温馨提示：未注册硅谷外卖帐号的手机号，登录时将自动注册，且代表已同意
              <a href="javascript:;">《用户服务协议》</a>
            </section>
          </div>
          <div :class="{on:!loginway}">
            <section>
              <section class="login_message">
                <input type="tel" maxlength="11" placeholder="手机/邮箱/用户名" v-model="name">
              </section>
              <section class="login_verification">
                <input type="text" maxlength="8" placeholder="密码" v-model="pwd"
                       v-if="changeSta">
                <input type="password" maxlength="8" placeholder="密码" v-model="pwd"
                       v-else="changeSta">
                <div class="switch_button off" @click="changeSta=!changeSta"
                     :class="changeSta ? 'on' : 'off'">
                  <div class="switch_circle" :class="{right:changeSta}"></div>
                  <span class="switch_text">{{changeSta? 'abc':'...'}}</span>
                </div>
              </section>
              <section class="login_message">
                <input type="text" maxlength="11" placeholder="验证码" v-model="captcha">
                <img class="get_verification" @click="getCaptcha" src="http://localhost:4000/captcha"
                     alt="captcha" ref="captcha">
              </section>
            </section>
          </div>
          <button class="login_submit">登录</button>
        </form>
        <a href="javascript:;" class="about_us">关于我们</a>
      </div>
      <a href="javascript:" class="go_back" @click="$router.back()">
        <i class="iconfont icon-jiantou3"></i>
      </a>
    </div>
    <AlertTip :alert-text="alertText" v-show="showAlertText"
              @closeTip="closeTip"></AlertTip>
  </section>
</template>

<script>
  import AlertTip from "../../components/AlertTip/AlertTip";
  import {reqPwdLogin,reqSendCode,reqSmsLogin} from "../../api";

  export default {
      data(){
        return{
          loginway:true,  //true代表短信登陆
          phone:'',//手机号
          compuTime:0,//验证码计时器及时
          pwd:'',//密码
          changeSta:false,
          name:'',// 用户名
          code:'',// 短信验证码
          captcha:'',// 图形验证码
          alertText: 'fsssa',
          showAlertText:false,
        }
      },
      computed:{
        rightPhone(){
          return /^1\d{10}$/.test(this.phone)
        }
      },
      methods:{
        //获取倒计时验证码
        async getCode(){
          //如果当前没有计时
          if (this.compuTime==0){
            //启动倒计时
            this.compuTime = 30
            this.intervalID = setInterval(()=>{
              this.compuTime --
              if (this.compuTime<=0){
                clearInterval(this.intervalID)
              }
            },1000)
          }
          //发送Ajax请求
          const result = await reqSendCode(this.phone)
          if (result.code ==1){
            //提示
            this.showAlert(result.msg)
            //停止计时
            if (this.compuTime){
              this.compuTime = 0
              clearInterval(this.intervalID)
              this.intervalID = undefined
            }
          }
        },
        //获取提示框
        showAlert(alertText){
          this.alertText = alertText
          this.showAlertText = true
        },
        //关闭提示框
        closeTip(){
          this.alertText = ''
          this.showAlertText = false
        },
        //登录检测
        async login(){
          let result
          if(this.loginway){  //短信登录
            const {phone,code,rightPhone} = this
            if (!this.rightPhone){
              //手机号不正确
              this.showAlert('手机号不正确')
              return
            }
            else if (!/^\d{6}$/.test(code)){
              //验证码要求6位数
              this.showAlert('验证码要求6位数')
              return
            }
            result = await reqSmsLogin(phone,code)

          }
          else {  //密码登录
            const {name,pwd,captcha} = this
            if (!this.name){
              //用户名必须指定
              this.showAlert('用户名必须指定')
              return
            }
            else if (!this.pwd){
              //密码必须指定
              this.showAlert('密码必须指定')
              return
            }
            else if (!this.captcha){
              //验证码必须指定
              this.showAlert('验证码必须指定')
              return
            }
            result = await reqPwdLogin({name,pwd,captcha})
          }
          //根据请求登录结果数据处理
          if (result.code == 0){
            //存起来到vuex的state状态
            const user = result.data
            await this.$store.dispatch('recordUser', user)
            //跳转到个人中心
            await this.$router.replace('/profile')
          }
          else {
            //显示警告提示
            const msg = result.msg
            this.showAlert(msg)
            //显示新的图片验证码
            this.getCaptcha()
          }

          //停止计时
          if (this.compuTime){
            this.compuTime = 0
            clearInterval(this.intervalID)
            this.intervalID = undefined
          }
        },
        //获取新的图形验证码
        getCaptcha(){
          this.$refs.captcha.src='http://localhost:4000/captcha?time='+Date.now()
        },

      },
      components:{
        AlertTip:AlertTip
      }
    }
</script>

<style lang="stylus" rel="stylesheet/stylus">
  @import "../../common/stylus/mixins.styl"
  .loginContainer
    width 100%
    height 100%
    background #fff
    .loginInner
      padding-top 60px
      width 80%
      margin 0 auto
      .login_header
        .login_logo
          font-size 40px
          font-weight bold
          color #02a774
          text-align center
        .login_header_title
          padding-top 40px
          text-align center
          >a
            color #333
            font-size 14px
            padding-bottom 4px
            &:first-child
              margin-right 40px
            &.on
              color #02a774
              font-weight 700
              border-bottom 2px solid #02a774
      .login_content
        >form
          >div
            display none
            &.on
              display block
            input
              width 100%
              height 100%
              padding-left 10px
              box-sizing border-box
              border 1px solid #ddd
              border-radius 4px
              outline 0
              font 400 14px Arial
              &:focus
                border 1px solid #02a774
            .login_message
              position relative
              margin-top 16px
              height 48px
              font-size 14px
              background #fff
              .get_verification
                position absolute
                top 50%
                right 10px
                transform translateY(-50%)
                border 0
                color #ccc
                font-size 14px
                background transparent
                &.right_phone
                  color black
            .login_verification
              position relative
              margin-top 16px
              height 48px
              font-size 14px
              background #fff
              .switch_button
                font-size 12px
                border 1px solid #ddd
                border-radius 8px
                transition background-color .3s,border-color .3s
                padding 0 6px
                width 30px
                height 16px
                line-height 16px
                color #fff
                position absolute
                top 50%
                right 10px
                transform translateY(-50%)
                &.off
                  background #fff
                  .switch_text
                    float right
                    color #ddd
                &.on
                  background #02a774
                >.switch_circle
                  //transform translateX(27px)
                  position absolute
                  top -1px
                  left -1px
                  width 16px
                  height 16px
                  border 1px solid #ddd
                  border-radius 50%
                  background #fff
                  box-shadow 0 2px 4px 0 rgba(0,0,0,.1)
                  transition transform .3s
                  &.right
                    transform translateX(30px)
            .login_hint
              margin-top 12px
              color #999
              font-size 14px
              line-height 20px
              >a
                color #02a774
          .login_submit
            display block
            width 100%
            height 42px
            margin-top 30px
            border-radius 4px
            background #4cd96f
            color #fff
            text-align center
            font-size 16px
            line-height 42px
            border 0
        .about_us
          display block
          font-size 12px
          margin-top 20px
          text-align center
          color #999
      .go_back
        position absolute
        top 5px
        left 5px
        width 30px
        height 30px
        >.iconfont
          font-size 20px
          color #999
</style>
